JADIS DEFY 7 SPIT SPUTTER


I AM EXPERIENCING A SPIT AND SPUTTER SOUND FROM THE LEFT CHANNEL OF MY Defy 7 amp after it warms up for an hour. this is not tube related. When I change left channel signal tubes with the right channel signal tubes, the noise stays in the left channel. All other components in the chain have been checked out. Any advice would be appreciated. thanks
jazz_nut
Got the 7mk4.Had a similar problem. Mine sounded like bacon frying w/o the aroma.Exchanged just the very front tube R/to/L.My center immage shifted.Not sure why that happened.Couldn't live with that. I re swapped back. While the amp was playing,I pushed down on this tube with a wiggly motion/ problem gone.Be nice if yours got cleared up that easy.
Trelja's correct on this--there is one authorized repair facility in the US I know of, and he's located in Colorado, I believe. The importer has narrowed the dealer network considerably. You might also want to ask Lyric Hi-Fi in Manhattan, as I believe they are an authorized Jadis dealer or at least have been while Northstar has been the distributor. They may have a local recommendation as well.
One more possibility is Savant Audio down in Princeton, who I believe has a technician who can service Jadis.
I dont mean to get off the subject, but Jadis has always been on my short list to buy and try. Isnt the beauty of a tube amp design is its easy of repair. Ive been told that there a less than a dozen platforms by which tube amps are based therefore any qualified tech should be able to repair most problems encountered. Most manufacturers do not use custom caps or resisitors which are commonly the problem, therefore getting replacement would be somewhat easy. Am I wrong here? I am fortunate to live near a hobbyist/amp designer who has managed to diagnsose and repair every tube amp problem ive had.
The spitting is caused by the point resistor for the driver
tubes. It is a 100K, 3 Watt resistor. BTW, Jadis transformers are guaranteed for life. If one fails, the owner does not pay for a new one. It is replaced free of
charge. The Mark III never sold for $4500.00. The west
coast Jadis dealer is Brooks Berdan at 626-359-9131. He
is located in Monrovia, CA. Hope this helps. Good luck.

Wendell Narrod